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WA-8000/8200
3-2.
ELECTRICAL
ADJUSTMENTS
TAPE
RECORDER
SECTION
|
Tape Speed Adjustment
Setting:
VOLUME
control:
mechanical
mid
Procedure:
Mode:
playback
speed checker
or
digital frequency
WA-48A
(3 kHz, 0 dB)
pl
Specification:
Speed checker
Digital frequency counter
+3 %
2,910 to 3,090 Hz
Frequency
difference
between
the beginning
and the end. of the tape should be within 1 %
(30 Hz).
Adjustment Location:
adjustable resistor
adjustment
hole cap
forward
reverse
—_—_—_—_—XK—
adjustment
screws
Record/playback
Head Azimuth
Adjustment
Procedure:
1.
Mode:
forward, reverse
test tape
P-4-A063
(6.3 kHz, —10 dB)
PHONES jack
2.
Turn
the
adjustment
screw
for the
maximum
output levels. If these levels do not match, turn
the
adjustment
screw
until
both
of output
levels match together within 0.5 dB.
within
output
0.5 dB
level
R-CH
peak
Screw
position
3.
Phase Check
Mode:
forward, reverse
test tape
P-4-A063
(6.3 kHz, —10 dB)
L-CH
oscilloscope
in phase
45°
2
135°
180°
wrong
good
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